CVE-2025-21738
CSIRTS triage
- What
- Buffer overflow vulnerability in the libata-sff driver allowing writes outside allocated memory.
- Who is affected
- Systems using legacy SATA controllers relying on the libata-sff driver.
- Urgency
- Medium priority; buffer overflow can cause data corruption or denial of service.
- Action
- Apply kernel patch ensuring proper buffer bounds checking in the libata-sff write code path.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffermsrc · 2026-08-06
External references
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